This list comparison tool allows you to compare two lists (arrays) to be able you analyze the difference between the two lists. The program receives lists of the type string or number and after starting the comparison it is possible to sort the results.
Inputs
Input data structure
Input data type
List A
List B
Handle data as
Output data separetad by
Results
Only in list A
A diff B
Only in list B
B diff A
Common items (A ∩ B)
Intersection between A and B
All items (A ∪ B)
Union of values between A and B
Exclusive items (A △ B)
Symmetric difference between A and B
Tips for Better Results
- Paste clean text without extra spaces.
- Use “set” mode to ignore duplicates.
- Use “list” mode to include repeated items.
How does the Compare Two Lists tool work?
It will function normally according to the rules of the sets, in Mathematics. However, in this tool, you can also choose the list option, so that it is possible to work with repeated values. The following operations are performed:
A minus B
Returns the values that are present only in list A.
B minus A
Returns the values that are present only in list B.
A intersection B
They are represented by the values that occur simultaneously in the two lists.
A union B
They are represented by all the values present in both lists.
Symmetric difference
The symmetric difference of two sets is the set of elements that are in one of the sets, but not at its intersection.
Important note
There is no limitation on the maximum number of rows allowed in a list, however, if you put in too large a volume of data, the browser may slow down or even crash for a moment.
FAQ about this Comparison List Tool
Can I compare lists with numbers?
What is the maximum list size?
Does this tool store my data?
Can I find duplicate items between two lists?
Is the comparison case sensitive?
What is the difference between Union and Symmetric Difference?
List comparison is a recurring task among professional programmers and students. If you want some new feature for this Compare Two Lists tool, let me know in the comments area. Also, tell me if you found some bug, that I can fix it as soon as possible.
You can learn about how this online list tool works or contribute improving the it by programming some new feature or fixing bugs. For that, go to Github on Github >> Compare Two Lists and make a pull request. This will be great!
what’s the maximum number of rows allowed in a list?
Hi Dak, I didn’t put any limitations, however, if you put a really big volume of data, it might slow down the browser or even crash for a moment.
Hello,
This is a great tool! Could you extend it to more lists? I would be very interested in using it for e.g. 4 lists.
Thanks
Remco
Hi Remco,
Thank you for using my Lists Comparator Tool. I’m happy to hear from you.
I will analise your recommendation to develop that in next time.
Best regards!
good one
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